Fault diagnosis method, device, equipment, medium and program product

Abstract

The embodiment of the invention provides a fault diagnosis method and device, equipment, a medium and a program product. The method comprises the following steps: firstly, when the high-voltage isolation switch is in a working completion state, acquiring time power curve information of the high-voltage isolation switch; and then, according to the working data of the high-voltage isolation switch in different working states in the time power curve information, comparing the working data with the standard value of each working data, and determining the fault type of the high-voltage isolation switch, so that the fault diagnosis cost of the high-voltage isolation switch is reduced and the fault diagnosis efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of electrical equipment testing, and in particular to a fault diagnosis method, device, equipment, medium and program product. Background Art

[0002] High-voltage disconnectors are one of the most widely used and widely used switchgear in substations. However, compared with main transformers and circuit breakers, high-voltage disconnectors are relatively less important, but still indispensable. Moreover, most high-voltage disconnectors are operated outdoors, and the working conditions are relatively harsh, which can easily lead to the mechanical structure of high-voltage disconnectors being stuck, opening or closing not being in place, and causing equipment failures. Therefore, in order to ensure the normal operation of high-voltage disconnectors, timely fault detection of high-voltage disconnectors is particularly important.

[0003] At present, the method for fault diagnosis of high-voltage disconnectors is mainly through manual troubleshooting and maintenance. Specifically, when a high-voltage disconnector fails to operate, maintenance personnel first need to cut off the power supply and isolate it, and then check and repair the possible fault location based on experience.

[0004] However, the existing technology for fault detection of high-voltage disconnectors has high cost, low efficiency, and difficulty in ensuring safety. Summary of the invention

[0005] The embodiments of the present application provide a fault diagnosis method, apparatus, device, medium and program product to solve the problems in the prior art of high-voltage disconnector fault detection, such as high cost, low efficiency and difficulty in ensuring safety.

[0006] In a first aspect, an embodiment of the present application provides a fault diagnosis method, comprising:

[0007] When the high-voltage disconnector is in a completed working state, obtaining time power curve information of the high-voltage disconnector, wherein the completed working state is a working state in which closing or opening is completed, and the time power curve information includes working data of the high-voltage disconnector in different working states;

[0008] The operating data in the time power curve information is compared with the standard value of each operating data to determine the fault type of the high-voltage disconnector.

[0009] In a possible implementation manner, the multiple time power curve information includes:

[0010] When the high-voltage disconnector is in a closing working state, the total closing time, rated total closing time, average closing power, maximum closing power, total closing power and rated closing power of the high-voltage disconnector;

[0011] When the high-voltage disconnector is in a working state of completing disconnection, the total disconnection power of the high-voltage disconnector.

[0012] In a possible implementation, the method further includes:

[0013] Multiplying the rated total closing time by a first preset coefficient to calculate a standard closing time;

[0014] Multiplying the rated closing power by a second preset coefficient to calculate a first standard closing power;

[0015] The rated closing power is multiplied by a third preset coefficient to calculate a second standard closing power.

[0016] In a possible implementation manner, comparing the working data in the time power curve information with a standard value of each working data to determine the fault type of the high-voltage disconnector includes:

[0017] If the total closing time is less than the standard closing time, determining whether the average closing power is greater than or equal to the rated closing power;

[0018] If the average closing power is greater than or equal to the rated closing power, it is determined that the high-voltage disconnector has a serious jamming fault.

[0019] If the average closing power is less than the rated closing power, it is determined that there is a problem with the internal control circuit of the mechanism box of the high-voltage disconnector, and the internal motor power supply cannot be cut off normally.

[0020] In a possible implementation, the method further includes:

[0021] If the total closing time is greater than or equal to the standard closing time, determining whether the average closing power is greater than or equal to the first standard closing power according to the average closing power and the first standard closing power;

[0022] If the average closing power is greater than or equal to the first standard closing power, determining whether the average closing power is greater than or equal to the second standard closing power;

[0023] If the average closing power is greater than or equal to the second standard closing power, it is determined that the high-voltage disconnector has a serious jamming fault;

[0024] If the average closing power is less than the second standard closing power, it is determined that the high-voltage disconnector has a slight jamming fault.

[0025] In a possible implementation, the method further includes:

[0026] If the average closing power is less than the first standard closing power, calculating the ratio of the total closing work to the total opening work according to the total closing work and the total opening work;

[0027] If the ratio is greater than or equal to a preset value, it is determined that the high-voltage disconnector is fault-free;

[0028] If the ratio is less than a preset value, it is determined that the high-voltage disconnector has a balance spring fatigue failure.

[0029] In a second aspect, an embodiment of the present application provides a fault diagnosis device, comprising:

[0030] An acquisition module, used for acquiring time power curve information of the high-voltage disconnector when the high-voltage disconnector is in a completed working state;

[0031] The determination module is used to compare the working data in the time power curve information with the standard value of each working data to determine the fault type of the high-voltage disconnector.

[0032] In a possible implementation manner, the multiple time power curve information includes:

[0033] When the high-voltage disconnector is in a closing working state, the total closing time, rated total closing time, average closing power, maximum closing power, total closing power and rated closing power of the high-voltage disconnector;

[0034] When the high-voltage disconnector is in a working state of completing disconnection, the total disconnection power of the high-voltage disconnector.

[0035] In a possible implementation manner, the fault diagnosis device further includes a calculation module, which is used to:

[0036] Multiplying the rated total closing time by a first preset coefficient to calculate a standard closing time;

[0037] Multiplying the rated closing power by a second preset coefficient to calculate a first standard closing power;

[0038] The rated closing power is multiplied by a third preset coefficient to calculate a second standard closing power.

[0039] In a possible implementation manner, the determining module is specifically configured to:

[0040] If the total closing time is less than the standard closing time, determining whether the average closing power is greater than or equal to the rated closing power;

[0041] If the average closing power is greater than or equal to the rated closing power, it is determined that the high-voltage disconnector has a serious jamming fault.

[0042] If the average closing power is less than the rated closing power, it is determined that there is a problem with the internal control circuit of the mechanism box of the high-voltage disconnector, and the internal motor power supply cannot be cut off normally.

[0043] In a possible implementation manner, the determining module is further configured to:

[0044] If the total closing time is greater than or equal to the standard closing time, determining whether the average closing power is greater than or equal to the first standard closing power according to the average closing power and the first standard closing power;

[0045] If the average closing power is greater than or equal to the first standard closing power, determining whether the average closing power is greater than or equal to the second standard closing power;

[0046] If the average closing power is greater than or equal to the second standard closing power, it is determined that the high-voltage disconnector has a serious jamming fault;

[0047] If the average closing power is less than the second standard closing power, it is determined that the high-voltage disconnector has a slight jamming fault.

[0048] In a possible implementation manner, the determining module is further configured to:

[0049] If the average closing power is less than the first standard closing power, calculating the ratio of the total closing work to the total opening work according to the total closing work and the total opening work;

[0050] If the ratio is greater than or equal to a preset value, it is determined that the high-voltage disconnector is fault-free;

[0051] If the ratio is less than a preset value, it is determined that the high-voltage disconnector has a balance spring fatigue failure.

[0052] In a third aspect, an embodiment of the present application provides an electronic device, including: a memory, a processor;

[0053] The memory stores computer-executable instructions;

[0054] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the above first aspect and / or various possible implementations of the first aspect.

[0055] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the first aspect above and / or various possible implementations of the first aspect.

[0056] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the above first aspect and / or various possible implementation methods of the first aspect.

[0057] The fault diagnosis method, apparatus, equipment, medium and program product provided in the embodiments of the present application first obtain the time power curve information of the high-voltage disconnector when the high-voltage disconnector is in a completed working state, so that various data about the working state of the high-voltage disconnector can be obtained by remote monitoring, thereby reducing the cost of manual inspection; then, the working data of the high-voltage disconnector under different working states in the time power curve information is compared with the standard value of each working data to determine the fault type of the high-voltage disconnector. Since traditional fault diagnosis requires maintenance personnel to diagnose the fault type based on experience, there is a certain degree of misoperation. In this way, only the working data in the time power curve information needs to be compared (for example, total closing time, rated total closing time, average closing power, maximum closing power, total closing power and rated closing power, etc.) to determine the fault type, with a small amount of calculation, high fault diagnosis efficiency and reduced fault diagnosis cost of the high-voltage disconnector. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0059] Figure 1 A system schematic diagram of a fault diagnosis system provided in an embodiment of the present application;

[0060] Figure 2 Schematic diagram of the process of the fault diagnosis method provided in the embodiment of the present application Figure 1 ;

[0061] Figure 3 Schematic diagram of the process of the fault diagnosis method provided in the embodiment of the present application Figure 2 ;

[0062] Figure 4 A schematic diagram of the structure of a fault diagnosis device provided in an embodiment of the present application;

[0063] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0064] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0065] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0066] High-voltage disconnectors are one of the most widely used and widely used switchgear in substations. However, compared with main transformers and circuit breakers, high-voltage disconnectors are relatively less important, but still indispensable. Moreover, most high-voltage disconnectors are operated outdoors, and the working conditions are relatively harsh, which can easily lead to the mechanical structure of high-voltage disconnectors being stuck, opening or closing not being in place, and causing equipment failures. Therefore, in order to ensure the normal operation of high-voltage disconnectors, timely fault detection of high-voltage disconnectors is particularly important.

[0067] At present, the method for fault diagnosis of high-voltage disconnectors is mainly through manual troubleshooting and maintenance. Specifically, when a high-voltage disconnector fails to operate, maintenance personnel first need to cut off the power supply and isolate it, and then check and repair the possible fault location based on experience.

[0068] However, in the prior art, when operation and maintenance personnel perform fault diagnosis, they need to first cut off the power and isolate the equipment, and then gradually disassemble and inspect it. The troubleshooting process is highly dependent on manual experience. If there is insufficient experience or misjudgment, repeated disassembly and assembly may be required, which will extend the repair time. On the other hand, due to the complex structure of the high-voltage disconnector, which may involve multiple parts such as mechanical, electrical, and control systems, it is difficult to quickly determine the specific fault point during manual inspection, which reduces the efficiency of fault diagnosis.

[0069] Based on this, the present application proposes a fault diagnosis method. Since the traditional fault diagnosis method of high-voltage isolating switches usually relies on manual experience for troubleshooting, maintenance personnel need to check the mechanical structure, electrical control circuit and other parts of the high-voltage isolating switches one by one, resulting in time-consuming and labor-intensive fault diagnosis and low efficiency. At the same time, manual inspections can usually only be carried out after an obvious fault occurs in the equipment, and early warning cannot be achieved, which easily leads to the expansion of faults and affects the stability of the power grid. Therefore, if the working state of the high-voltage isolating switch itself can be monitored, and the location and type of the fault can be derived by combining the data analysis method, the efficiency of fault diagnosis can be improved, unnecessary disassembly and replacement of parts can be reduced, thereby reducing maintenance costs and improving system safety and stability; specifically, the operation of the high-voltage isolating switch mainly depends on the motor in its transmission device to drive the mechanism to close or open the gate, and the output power of the motor (i.e., the curve of power variation over time) can directly reflect the resistance and load conditions encountered by the isolating switch during operation. If an abnormality occurs in a certain link of the isolating switch, such as mechanical jamming, spring fatigue, etc., the motor load will change, causing the power curve to deviate from the normal range. Therefore, this method can reduce the fault diagnosis cost of the high-voltage isolating switch and improve the efficiency of fault diagnosis.

[0070] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0071] A schematic diagram of a fault diagnosis system provided in an embodiment of the present application; Figure 1 As shown, the fault diagnosis system includes a power measurement component, a data acquisition component, and a diagnosis and analysis component.

[0072] Specifically, the power measurement component consists of two parts: a snap-on current transformer and a voltage probe. The snap-on current transformer uses the principle of electromagnetic induction to measure AC current, that is, after finding the corresponding contactor and the incoming terminals of phases A and C, the snap-on current transformer is directly installed at the corresponding position for measurement, wherein the voltage probe is clamped at the terminal of the contactor, and the probe contacts the screw at the terminal to derive the corresponding potential signal; the current signal and the potential signal are then input into the data acquisition component together; then, the data acquisition component performs analog-to-digital conversion on the collected potential signal and current signal, transforms them into digital signals and transmits them to the diagnostic analysis component; finally, based on the input potential signal and current signal, the working data of the high-voltage disconnector under different working conditions is calculated, and compared with the standard value of each working data to determine the fault type of the high-voltage disconnector.

[0073] Figure 2 Schematic diagram of the process of the fault diagnosis method provided in the embodiment of the present application Figure 1 ;like Figure 2 As shown, the method includes:

[0074] S201. When the high-voltage disconnector is in a completed working state, obtaining time power curve information of the high-voltage disconnector.

[0075] Among them, the completed working state is the working state of completing closing or opening; the closing and opening of the high-voltage disconnector represent the two states of switch closing and opening respectively, wherein closing refers to the high-voltage disconnector switching from the open state to the closed state to connect the circuit, and opening refers to the high-voltage disconnector switching from the closed state to the open state to disconnect the circuit; the time power curve information includes the working data of the high-voltage disconnector under different working states.

[0076] It should be noted that the time-power curve information includes the total closing time, rated total closing time, average closing power, maximum closing power, total closing power and rated closing power of the high-voltage disconnector when the high-voltage disconnector is in the working state of completing closing; and the total opening power of the high-voltage disconnector when the high-voltage disconnector is in the working state of completing opening.

[0077] Optionally, before obtaining the time power curve information of the high-voltage disconnector, it is necessary to calculate the output power of the transmission mechanism motor in the high-voltage disconnector according to the phase voltage and phase current values ​​measured by the power measurement component. The specific calculation process is as follows:

[0078] First, the phase voltage of the three-phase motor in the high-voltage disconnector is measured using the power measurement component. and phase current ; Then, the input power of the three-phase motor is calculated according to the power calculation formula, that is, ,in, is the input voltage of the three-phase motor, is the input current of the three-phase motor; further, the electromagnetic power transmitted from the stator through the air gap to the rotor by electromagnetic action is calculated first, that is, , where PM is electromagnetic power, PCU1 is copper loss consumed in stator resistance, and PFe is iron loss consumed in field resistance; then preliminarily calculate the output power of the three-phase motor , where s is the slip rate, It is the mechanical loss caused by the bearing friction, wind resistance and other losses when the rotor rotates. The additional loss is caused by the high-order harmonic flux and leakage flux generated during the operation of the motor, and the additional loss in the iron core, frame and other metal parts of the three-phase motor; finally, considering that the motors in the mechanism box are all small asynchronous motors, their additional losses are small and can be ignored in the calculation. By combining the calculation formula of stator copper loss and iron loss, the output power can be obtained by the output power of the three-phase motor The final formula for output power is calculated by the formula: ,in is the phase voltage (take The average value of is the phase current (take The average value of is the motor equivalent impedance, is the back electromotive force coefficient of the three-phase motor. At this point, the output power of the three-phase motor of the transmission mechanism in the high-voltage disconnector can be calculated at each moment. The start of the closing / opening process is determined by the control signal of the disconnector or the current mutation detection, and the output power value at each moment in the process is recorded and the timestamp is stored. After the closing or opening is completed, the diagnostic analysis component visualizes the collected time power data points to generate the time power curve of the high-voltage disconnector.

[0079] It can be understood that by calculating the output power value at each moment based on the voltage signal and current signal of the three-phase motor during the operation of the high-voltage disconnector and obtaining the time power curve of the high-voltage disconnector without the need to install additional physical sensors, the hardware cost of manual fault detection is reduced, and remote monitoring can be achieved, reducing the cost of manual inspections.

[0080] S202: Determine the fault type of the high-voltage disconnector by comparing the working data in the time power curve information with the standard value of each working data.

[0081] It should be understood that by comparing the working data in the time-power curve information, such as closing time, average closing power, maximum closing power, total closing power and total opening power, with the standard value of each corresponding working data, if the abnormal value is exceeded, the fault diagnosis system can directly determine that the high-voltage disconnector may have a fault problem. For example, if the closing time of a device exceeds the standard value by 20% and the power curve rises abnormally, the fault diagnosis system can automatically determine that the high-voltage disconnector may be slightly stuck, thereby issuing an alarm and arranging maintenance in advance without waiting for the equipment to be completely damaged before conducting manual inspection, thereby increasing the service life of the equipment and reducing maintenance costs.

[0082] In one achievable method, the specific method for calculating the standard value of each working data includes:

[0083] First, the rated total closing time is multiplied by the first preset coefficient to calculate the standard closing time; then, the rated closing power is multiplied by the second preset coefficient to calculate the first standard closing power; finally, the rated closing power is multiplied by the third preset coefficient to calculate the second standard closing power.

[0084] Among them, the preset coefficient is generally an empirical setting value, which usually needs to be set considering factors such as mechanical friction when closing the circuit breaker, ambient temperature, equipment aging, etc. It can also be set according to experimental values. The specific preset coefficient value can be determined according to actual conditions, and the embodiment of the present application does not make specific restrictions here.

[0085] The fault diagnosis method provided in the embodiment of the present application first obtains the time power curve information of the high-voltage disconnector when the high-voltage disconnector is in a completed working state, so that various data about the working state of the high-voltage disconnector can be obtained through remote monitoring, reducing the cost of manual inspection; then, the working data of the high-voltage disconnector under different working states in the time power curve information is compared with the standard value of each working data to determine the fault type of the high-voltage disconnector. Since traditional fault diagnosis requires maintenance personnel to diagnose the fault type based on experience, there is a certain degree of misoperation. In this way, only the working data in the time power curve information needs to be compared (for example, total closing time, rated total closing time, average closing power, maximum closing power, total closing power and rated closing power, etc.) to determine the fault type, with a small amount of calculation, high fault diagnosis efficiency and reduced fault diagnosis cost of the high-voltage disconnector.

[0086] Figure 3 Schematic diagram of the process of the fault diagnosis method provided in the embodiment of the present application Figure 2 ;like Figure 3 As shown, in this embodiment Figure 2 Based on the embodiment, a method for determining the fault type of the high-voltage disconnector is described in detail, and the method includes:

[0087] S301. If the total closing time is less than the standard closing time, determine whether the average closing power is greater than or equal to the rated closing power.

[0088] Among them, the rated closing power refers to the standard power value required for the three-phase motor of the high-voltage disconnector to complete the closing action under normal working conditions.

[0089] It should be noted that in the fault diagnosis of high-voltage disconnectors, the total closing time is usually a key parameter, which more intuitively reflects the operating speed and mechanical state of the switch. In addition, a closing time that is too long or too short usually indicates different fault types. Therefore, the comparison result between the total closing time and the standard closing time can be used as the first step of judgment. Furthermore, in practical applications, different fault types cannot be distinguished by closing time alone. For example, a longer closing time may be due to increased resistance or insufficient motor output; a shorter closing time may be due to loose mechanism or excessive driving current. Power is a key physical quantity that can reflect changes in motor load. Combined with time analysis, the fault type can be accurately determined.

[0090] In one feasible method, when the total closing time is greater than or equal to the standard closing time, it is determined whether the average closing power is greater than or equal to the first standard closing power based on the average closing power and the first standard closing power; then, if the average closing power is greater than or equal to the first standard closing power, it is determined whether the average closing power is greater than or equal to the second standard closing power; then, if the average closing power is greater than or equal to the second standard closing power, it is determined that the high-voltage disconnector has a serious jamming fault; finally, if the average closing power is less than the second standard closing power, it is determined that the high-voltage disconnector has a slight jamming fault.

[0091] It can be understood that when the total closing time is greater than or equal to the standard closing time, it indicates that the mechanical resistance of the high-voltage disconnector increases when closing. Therefore, the power data is further analyzed, and by judging whether the power exceeds the first standard closing power and the second standard closing power in turn, it is further distinguished whether the high-voltage disconnector has a slight jam or a serious jam fault. That is, when the average closing power is greater than or equal to the first standard closing power and the average closing power is greater than or equal to the second standard closing power, it is determined that the high-voltage disconnector has a serious jam fault; if the average closing power is greater than or equal to the first standard closing power and the average closing power is less than the second standard closing power, it is determined that the high-voltage disconnector has a slight jam fault.

[0092] In one feasible method, if the average closing power is less than the first standard closing power, the ratio between the total closing work and the total opening work is calculated based on the total closing work and the total opening work; then, if the ratio is greater than or equal to a preset value, it is determined that the high-voltage disconnector is fault-free; finally, if the ratio is less than the preset value, it is determined that the high-voltage disconnector has a balance spring fatigue failure.

[0093] It should be noted that in the above analysis, the total closing time and the average closing power can be used to judge whether the situation is mild or severe. However, if the closing time is long, but the average closing power does not reach the first standard power (that is, the power does not increase significantly), it means that the mechanical resistance is not large. In this case, it may be a problem with the transmission mechanism or auxiliary components, rather than a jamming fault. Therefore, it is necessary to further use the total work done by the high-voltage disconnector under different working conditions (that is, the total closing work and the total opening work) to determine whether there is fatigue of the balance spring.

[0094] It should be understood that when the closing power is less than the first standard power, it means that the load of the three-phase motor of the high-voltage disconnector has not increased significantly, and it may not be a jamming problem, but a problem with the transmission system; further, based on the total work done when closing and the total work done when opening, the ratio between the total work done when closing and the total work done when opening is calculated. When the ratio is greater than or equal to the preset value (for example, 1), it means that the work done when opening can be maintained within the normal range, and the high-voltage disconnector is fault-free; and when the ratio is less than the preset value (for example, 1), it means that the energy loss during the opening process is large, which may be due to fatigue of the balance spring, resulting in insufficient energy recovery and increased switch operation resistance.

[0095] It is understandable that by using multiple working data (total closing time, average closing power, and total closing work and opening work) to judge the fault type at the same time, it is avoided to misjudge normal equipment as faulty due to analyzing one working data alone. In addition, this method can not only judge jamming, but also detect spring fatigue, provide more comprehensive fault diagnosis capabilities, and can remotely and automatically detect faults without power outages, reducing the number of manual inspections.

[0096] S302. If the average closing power is greater than or equal to the rated closing power, it is determined that the high-voltage disconnector has a serious jamming fault.

[0097] It should be noted that under normal circumstances, the power demand of the motor during the closing process is relatively stable and is mainly affected by the mechanical load. If the closing power increases significantly, it means that the motor encounters greater resistance when pushing the disconnector to close, that is, the high-voltage disconnector has a serious stuck fault.

[0098] It can be understood that this method can quickly determine the mechanical failure of the high-voltage disconnector, avoid damage to the motor caused by long-term overload operation, and improve equipment reliability.

[0099] S303. If the average closing power is less than the rated closing power, it is determined that there is a problem with the internal control circuit of the mechanism box of the high-voltage disconnector, and the internal motor power supply cannot be cut off normally.

[0100] It should be noted that under normal circumstances, when the high-voltage disconnector is closed, the motor should provide rated power at the moment of closing and quickly cut off the power; so when the average closing power is less than the rated closing power, it indicates that there is a problem with the internal relay or control circuit, causing the motor to continue to operate in a light-load state, with low power but not completely stopped working, or the relay or contactor inside the mechanism box is stuck and fails to effectively cut off the power supply, causing the motor power to remain at a small value.

[0101] It is understandable that by analyzing whether the closing power is lower than the rated power, it is possible to distinguish between mechanical jamming problems and electrical control circuit problems, avoid misjudgment, and effectively improve the operating stability of the high-voltage disconnector, reduce motor damage, and extend the service life of the equipment.

[0102] Figure 4 A schematic diagram of the structure of a fault diagnosis device provided in an embodiment of the present application; Figure 4 As shown, the fault diagnosis device 40 provided in this embodiment includes: an acquisition module 401 and a determination module 402 .

[0103] An acquisition module 401 is used to acquire time power curve information of the high-voltage disconnector when the high-voltage disconnector is in a completed working state;

[0104] The determination module 402 is used to compare the working data in the time power curve information with the standard value of each working data to determine the fault type of the high-voltage disconnector.

[0105] In a possible implementation manner, the multiple time power curve information includes:

[0106] When the high-voltage disconnector is in the working state of completing closing, the total closing time, rated total closing time, average closing power, maximum closing power, total closing power and rated closing power of the high-voltage disconnector;

[0107] The total opening power of the high-voltage disconnector when the high-voltage disconnector is in the working state of completing the opening.

[0108] In a possible implementation manner, the fault diagnosis device further includes a calculation module, which is used to:

[0109] Multiply the rated total closing time by the first preset coefficient to calculate the standard closing time;

[0110] Multiplying the rated closing power by the second preset coefficient to calculate the first standard closing power;

[0111] The rated closing power is multiplied by the third preset coefficient to calculate the second standard closing power.

[0112] In a possible implementation, the determination module 402 is specifically configured to:

[0113] If the total closing time is less than the standard closing time, determine whether the average closing power is greater than or equal to the rated closing power;

[0114] If the average closing power is greater than or equal to the rated closing power, it is determined that the high-voltage disconnector has a serious jamming fault.

[0115] If the average closing power is less than the rated closing power, it is determined that there is a problem with the internal control circuit of the mechanism box of the high-voltage disconnector, and the internal motor power supply cannot be cut off normally.

[0116] In a possible implementation, the determination module 402 is further configured to:

[0117] If the total closing time is greater than or equal to the standard closing time, determining whether the average closing power is greater than or equal to the first standard closing power according to the average closing power and the first standard closing power;

[0118] If the average closing power is greater than or equal to the first standard closing power, determining whether the average closing power is greater than or equal to the second standard closing power;

[0119] If the average closing power is greater than or equal to the second standard closing power, it is determined that the high-voltage disconnector has a serious jamming fault;

[0120] If the average closing power is less than the second standard closing power, it is determined that the high-voltage disconnector has a slight jamming fault.

[0121] In a possible implementation, the determination module 402 is further configured to:

[0122] If the average closing power is less than the first standard closing power, the ratio between the total closing work and the total opening work is calculated according to the total closing work and the total opening work;

[0123] If the ratio is greater than or equal to the preset value, it is determined that the high-voltage disconnector is not faulty;

[0124] If the ratio is less than the preset value, it is determined that the high-voltage disconnector has a balance spring fatigue failure.

[0125] The fault diagnosis device provided in this embodiment can execute the method provided in the above method embodiment. Its implementation principle and technical effect are similar, and this embodiment will not be described in detail here.

[0126] Figure 5 This is a schematic diagram of the structure of the electronic device provided in this application. Figure 5As shown, the electronic device 50 provided in this embodiment includes: at least one processor 501 and a memory 502. Optionally, the device 50 also includes a communication component 503. The processor 501, the memory 502 and the communication component 503 are connected via a bus 504.

[0127] In a specific implementation process, at least one processor 501 executes the computer-executable instructions stored in the memory 502, so that at least one processor 501 executes the above method.

[0128] The specific implementation process of the processor 501 can be found in the above method embodiment, and its implementation principle and technical effect are similar, so this embodiment will not be repeated here.

[0129] In the above embodiments, it should be understood that the processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the invention can be directly implemented as a hardware processor, or can be implemented by a combination of hardware and software modules in the processor.

[0130] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (NVM), such as at least one disk storage.

[0131] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of this application is not limited to only one bus or one type of bus.

[0132] The present application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0133] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

[0134] The above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general or special-purpose computer.

[0135] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (Application Specific Integrated Circuits, referred to as: ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0136] The division of units is only a logical function division, and there may be other divisions in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0137] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0138] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0139] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0140] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0141] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A fault diagnosis method, characterized in that: include: When the high-voltage disconnector is in a completed working state, obtaining time power curve information of the high-voltage disconnector, wherein the completed working state is a working state in which closing or opening is completed, and the time power curve information includes working data of the high-voltage disconnector in different working states; The operating data in the time power curve information is compared with the standard value of each operating data to determine the fault type of the high-voltage disconnector.

2. The method according to claim 1, characterized in that The time power curve information includes: When the high-voltage disconnector is in a closing working state, the total closing time, rated total closing time, average closing power, maximum closing power, total closing power and rated closing power of the high-voltage disconnector; When the high-voltage disconnector is in a working state of completing disconnection, the total disconnection power of the high-voltage disconnector.

3. The method according to claim 2, characterized in that The method further comprises: Multiplying the rated total closing time by a first preset coefficient to calculate a standard closing time; Multiplying the rated closing power by a second preset coefficient to calculate a first standard closing power; The rated closing power is multiplied by a third preset coefficient to calculate a second standard closing power.

4. The method according to claim 3, characterized in that The step of comparing the working data in the time power curve information with the standard value of each working data to determine the fault type of the high-voltage disconnector includes: If the total closing time is less than the standard closing time, determining whether the average closing power is greater than or equal to the rated closing power; If the average closing power is greater than or equal to the rated closing power, it is determined that the high-voltage disconnector has a serious jamming fault; If the average closing power is less than the rated closing power, it is determined that there is a problem with the internal control circuit of the mechanism box of the high-voltage disconnector, and the internal motor power supply cannot be cut off normally.

5. The method according to claim 4, characterized in that The method further comprises: If the total closing time is greater than or equal to the standard closing time, determining whether the average closing power is greater than or equal to the first standard closing power according to the average closing power and the first standard closing power; If the average closing power is greater than or equal to the first standard closing power, determining whether the average closing power is greater than or equal to the second standard closing power; If the average closing power is greater than or equal to the second standard closing power, it is determined that the high-voltage disconnector has a serious jamming fault; If the average closing power is less than the second standard closing power, it is determined that the high-voltage disconnector has a slight jamming fault.

6. The method according to claim 5, characterized in that The method further comprises: If the average closing power is less than the first standard closing power, calculating the ratio of the total closing work to the total opening work according to the total closing work and the total opening work; If the ratio is greater than or equal to a preset value, it is determined that the high-voltage disconnector is fault-free; If the ratio is less than a preset value, it is determined that the high-voltage disconnector has a balance spring fatigue failure.

7. A fault diagnosis device, characterized in that: include: An acquisition module, used for acquiring time power curve information of the high-voltage disconnector when the high-voltage disconnector is in a completed working state, wherein the completed working state is a working state of completed closing or completed opening, and the time power curve information includes working data of the high-voltage disconnector in different working states; The determination module is used to compare the working data in the time power curve information with the standard value of each working data to determine the fault type of the high-voltage disconnector.

8. An electronic device, characterized in that: include: Memory, processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 6 when executed by a processor.

10. A computer program product, characterized in that The invention comprises a computer program, which implements the method according to any one of claims 1 to 6 when being executed by a processor.

Images